Feed-water purifier



(No Model.)

B. F. FIELD. FEED WATER PURIPIER.

No. 432,026. Patented July 15, 1890.

Witnesses WE: W Mutt 1 UNITED STATES PATENT OFFICE.

BENJAMIN F. FIELD, OF CHICAGO, ILLINOIS.

FEED-WATER PU RlFlER.

Patent No. 432,026, dated July 15, 1890.

Divided and this application filed December 26, 1889. Serial No.

335,447. (No model.)

.To all whom it mayconcern;

Be it known that I, BENJAMIN F. FIELD, of Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Feed-W'ater Purifiers; and I do hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part of this specification, and tothe figures of reference marked thereon.

This invention relates primarily to that class of feed-water purifiersfor which Letters Patent Nos. 410,509 and 416,033 were granted,respectively, September 3, 1889, and N ovember' 26, 1889; and itconsists in the novel and improved construction and arrangement andapplication of the internal plates or tubes employed in said apparatusfor assisting in the purification of the water, all as hereinafter fullydescribed, and pointedout in the claims.

In the drawings, Figure 1 is a perspective View, partly in section, of asection of the conduit, Fig. 2 is an end view, and Fig. 3 alongitudinalsectional view of the same.

Similar numbers of reference in the several figures indicate the sameparts.

In the drawings, l'represents a section of the conduit or pipe throughwhich the feedwater is conducted into the boiler, said conduit beingformed in sections for convenience and suspended within the boiler abovethe flues, the feed-water being heated and purified during its passageand before delivering into the general circulation of the boiler, asexplained in my before-mentioned patents. In some or all of the sections1 of the conduit are arranged a series of internal tubes ,or plates 20,with the surfaces of which the water is brought into contact and causedto deposit the scale-producing materials.

Instead of supporting and holding the inner tubes separated by means ofcross-bolts and washers, as heretofore, they are supported and sustainedin position within the conduit by means of spiders 11, fitted within theconduitsection and provided with supporting and separating shoulders toreceive the several tubes. These spiders are applied to opposite ends ofeach series of tubes 20, and are clamped and held in place by means of arod 12, provided with tightening devices, such as nuts or equivalentmeans for drawing the spiders together or toward the ends of the tubes.The nest of tubes is held from longitudinal motion within the conduit bya cross-bolt 30, preferably passed through an eye in the rod 12. Thetubes 20 are provided with a series of slots or perforations along theupper side, and a 1011- gitudinal slot 21 is formed at the bottom,thisarrangement being adapted to facilitate the free circulation of thewater through the various passages to permit the steam generated withinthe purifier to rise to the upper portion of the conduit, and to causethe sediment deposited within the tubes 20 to be directed into the lowerportions of the conduit. This form of internal tube is preferable to theperforated tube of my prior patents, as it retains all the advantages ofthe former in so far as the purification of the water is concerned andcan be produced and applied at much less cost, as the riveting, Welding,or other means em ployed for retaining the metal in tubular form can bedone away with and the tubes formed from sheets, properly perforated toprovide the upper series of openings, and bent partially around intotubular form, with the edges separated, however, to provide the slot oropening in the bottom portion for the escape of sediment, (to The bentsheet or partial tube is held and retained in proper form with its edgesseparated by means of the spiders hereinbefore described, and which areapplied to the ends of the tubes so as to separate the latter, and atthe same time retain them in proper relative position.

This application is filed as and constitutes a division of my priorapplication, Serial No. 325,238, filed September 27, 1889.

Having thus described my invention, what I claim as new is 1. In afeed-water purifier such as described, the conduit provided with aseries of internal tubes, supported upon spiders held in place by atie-rod, as and for the purpose set forth.

2. In a feed-water purifier such as described, the combination, with theconduit and the internal tubes arranged one within another, of thespiders located at the ends of the series of tubes and provided withretaining-shouh substantially as and for the purpose set forth.

3. In a feed-Water purifier, the combination,

with the conduit, of a series of metal sheets bent into tubular form,but with their edges separated to form longitudinal slots, and providedwith openings in their upper sections, said tubes being of differentdiameters and arranged one Within another and supported Within theconduit with their slotted portions openingdownward,substantiallyasdescribed.

4. In a feed-water purifier such as described,

the combination, with the conduit through Which the feed-Water isconducted, of a series of internal tubes or plates arranged one withinanother and supported and held apart by cross-pieces, provided withshoulders interposed between and engaging the ends of the said internaltubes or plates, substantially as described.

BENJAMIN I1. FIELD. Witnesses:

THos. DURANT, A. KELLY.

